Scholarly record
TEMPORAL VARIATIONS IN GREENHOUSE GAS EMISSIONS FROM AGRICULTURAL SOILS
Abstract
Soil moisture, soil temperature, nutrient availability, and land use practices affect the GHG emissions from soils. In this study, the aim is to determine and analyse GHG emissions from agricultural soils in five monitoring sites. The mobile spectrophotometer Picarro G2508 is used for the quantification of N2O, CH4, and CO2 soil flux across five monitoring sites used for agricultural production during the growing seasons from 2017 to 2023. Findings reveal significant variations in GHG emissions across the monitoring sites. Specifically, the average N2O emissions at monitoring sites used form agricultural production varied from 3.73 to 46.54 g N2O ha-1 day-1, while the average CO2 emissions ranged from 65.75 to 166.08 kg CO2 ha-1 day-1, and CH4 assimilation ranged from 1.50 to 5.30 g CH4 ha-1 day-1. Meteorological conditions exert a considerable effect on soil microbiological activity within a growing season, further impacting GHG emissions. These findings highlight the complex interplay between soil dynamics, environmental factors, and GHG emissions in agricultural systems. This study contributes valuable insights into the understanding of GHG emissions from agricultural soils, providing essential information for policymakers, land managers, and stakeholders involved in developing sustainable agricultural practices and mitigating climate change.
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